leashn.[OE. lese, lees, leece, OF. lesse, F. laisse, LL. laxa, fr. L. laxus loose. See Lax.]1. A thong of leather, or a long cord, by which a person may hold or restrain an animal, such as a falconer holding his hawk, or a courser his dog. For dogs and cats, the leash is commonly attached to a collar around the neck of the animal.()Even like a fawning greyhound in the leash. (Shak.)2. (Sporting) A brace and a half; a tierce; three; three creatures of any kind, especially greyhounds, foxes, bucks, and hares; hence, the number three in general.()[I] kept my chamber a leash of days. (B. Jonson.)Then were I wealthier than a leash of kings. (Tennyson.)3. (Weaving) A string with a loop at the end for lifting warp threads, in a loom.()To keep (a person) on a short leash to maintain close control over the activities of (a person).()v. t. To tie together, or hold, with a leash.()